Improvement in ice-picks



s. s. aovrnon '& n. KEEFE.

Ice-Picks.

Patented Oct. 28,1873.

W'fimssas.

UNITED STATES PATENT OFFICE.

SIDNEY S. BOYNTON AND DANIEL KEEFE, OF PEORIA, ILLINOIS.

IMPROVEMENT IN ICE-PICKS.

Specification forming part of Letters Patent No. 143,957, dated October 28, 1873; application filed October 1, 1873.

To all whom it may concern:

Be it known that we, SIDNEY S. BOYNTON and DANIEL KEEFE, both of the city of Peoria, in the county of Peoria, in the State of Illinois, have invented a Combined Ice-Pick and Chisel for chipping and planing ice for cooling purposes, and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the annexed drawings, making a part of this specification, in which like letters of reference refer to like parts, and in Which- Figure 1 represents a full profile; Fig. 2, a longitudinal section through the least diameter.

This invention is an improvement upon the common ice pick, combining, as it does, a pointed instrument with a serrated chisel, for planing or shaving ice, or for separating lumps or blocks of the same. It consists of a broad blade, like a chisel, but with the edge divided into several points or serrations, each having sharp lateral edges from point to fork. This instrument is fitted into a handle, like a chisel, and is used for shaving, planing, or scraping ice, or for splitting the same.

In the drawings, A represents the blade, having several large serrations, a a, &c., all in the same plane, Whose lateral edges or sides, from point to crotch, are sharp, so that, when the pick is used for planing off thin shavings of ice, a more extensive cutting-edge is brought into action than Where a single straight cutting-edge is used.

. The instrument is held at a low angle with the surface of the ice in using it, and the upper end terminates in a spike, which fits into a straight handle, like a chisel. A block of ice may be divided in any line, truly, by puncturing the same along the desired division, to a greater or less depth. 7

What We claim as our invention is- The ice-pick and chisel or plane A, having a series of. large triangular cutting-points, with sharp sides or lateral edges from point to crotch, or angle between each point, .substan tially as described.

In testimony that We claim the foregoing ice-pick and chisel, We have hereunto set our hands this 25th day of September, 1873.

SIDNEY S. BOYNTON. DANIEL KEEFE. Witnesses HENRY W. WELLs,

J AMES THURLoW. 

